After i removed jtag chip from the xbox 360 it powers on but it wont boot up i tried everything i can but still no result :/
You can't just remove the chip and hope it will still boot with no problem's, You need to send your console to a pro to remove it. It will need a re-flash sorry to say. Also moved your thread to Support Section.
Yeah console's not dead, Just needs nandX soldering back in to recover nand and re-flash to stock or re-install the glitch chip.